It is used in reference to closed shapes and means "on the inside".
To turn or place at an angle.
=having nature or characteristics of a variable=
product and reaction are equality favored in the reaction
There could be thousands of analogies for "interior". Do you mean, "how can you represent an interior symbolically in words", or do you mean something else?
If you mean interior design, then yes.
Lateral means side, quadrilateral (4 sides)
On the basis that you are familiar with terms such as "tetrakaidecagon" I assume you are mathematically at a stage where angles are measured in radians and not degrees. Then the interior angles of a 14 sided polygon sum to (14-2)*pi radians or 12*pi radians.
Mathematically is a word having to do with the practical application of Arithmetic. So one assumes that any sentence with that word would have to refer to math. " The sun and the planet Venus cannot occupy the same space, it is mathematically impossible." "Mathematically, the sum of two factors is known as addition."
two lines that intersect at 90 degrees are perpendicular ex +
it means something that is next to something usually used in angles
"Average" as in arithmetic mean is equal to (a1 + a2 + a3 + ... + an)/n, where ai are elements of a set.
I don't know about "mathematically" but the idiom is what you say when you don't want any change back from the money you paid for your items with -- it's leaving them a "tip" of the extra money.